Review on Sony - C400 Wireless Behind-Neck In Ear Headphone White (WIC400/W) by Kero Montes

The sound is not fire, and it is not better than $5,000 headphones, despite what some people may tell you. Wired Sennheiser cx200 headphones costing just over a thousand dollars offer superior clarity, depth, and detail. In contrast to popular belief, the sound quality of these Sony headphones does not cause your ears to bleed. However, they are clearly not on par with sound-specialized brands like Sennheiser. They only managed to keep 15-18 hours instead of the promised 20. No one seems dissatisfied with the microphone. These work great as a headset. This collar is nevertheless a hindrance to an active lifestyle. Voice alerts and the headphones' own beeps are distracting, but they shouldn't be so loud that the music can't be heard. When the battery life reaches zero, the headphones turn off immediately without any advanced notice. It's possible that an hour before to powering down, some squeaky noises will be added. Problems with the bluetooth connection are experienced, although the connection is maintained reliably and even through walls.